This RCT intervention among nulliparous pregnant women with an intense fear of childbirth sought to promote preparedness for childbirth and to enhance positive parenting. Pregnant women (n = 8,611) filled in a 'fear of childbirth' questionnaire. Nulliparous women with severe fear of childbirth (n = 355) were randomized into intervention (n = 131; 41 refused) and control (n = 224) groups. They rated themselves on a preparedness scale in middle and late pregnancy, and on a motherhood scale three months after childbirth. The intervention included six psycho-education group sessions during pregnancy and one after childbirth. This intervention increased the mothers' preparedness for childbirth, which predicted an increase in positive motherhood.